Opener and closure for cans.



G. W. BERRY.

OPENER AND CLOSURE FOR CANS,

APPLICATION HLED Aue.n. 1911.

1 ,2? 1,583. Patented July 9, 1918.

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STATES J ran-u GEORGE BERRY; O F LORNA DOONE, 'NEW SOUTH- WALES, AUSTRALIA.

OPENER AND CLOSURE IFOR CANS.

To all whom it may concern Be it known that I, GEORGE 'WVILLIAM BERRY,1L subjectof the King. O England, and a resident of Lorna Doone, Old South Head Road, Rose Bay, in the State of New South ales, Commonwealth of Australia,

have invented. certain new and useful Improvements in Openers and Closures for Cans, of which the following is a specification.

This invention relates to removable closures or covers for circular cans to be utilized in connection with cans hermetically sealed with one end closure of the can comprising taggers tin, said cover consisting of a disk portion having an'annular flange provided with an integral cutter or cutter nib which is adapted to pierce and cut or rip the taggers tin closure of the can.

In one form of closure of this character the cutter is stamped from the material of the disk portion of the closure to extendin a plane substantially parallel with said disk portion in the normal inoperative position or use of the closure and to lie contiguous to the taggers tin closure of the can when the cover is applied to such can, and to use the cutter. it is necessary to bend the cutter to extend substantially parallel with the flange of the closure. In other closures of thistype the cutter as it is stamped 'from the closure is bent to extend verticallyor parallel to the closure flange necessitating means to retain the closure in its inoperative position on the cause that the cutter will not contact with tl'ie tagg'ers'tin end of the can. In both'ins'tan'ces after the taggers tin end of the can is removed and the removable cover is utilised to closesuch end of the can the contents of the caii ar'e always open to the atmosphere through the opening from which the cutter is "stamped with the consequent "deterioration of the contents of the can;

Specification of Letters Patent.

In the norinal inoperative". posi- Patented July 9, 1918.

Application filed August 11, 1917. Serial No. 185,637.

to overcome the above disadvantages and to provide a closure of this character with improved cutting means integral therewith, whereby the disk portionof the closure will at all times he contiguous to the end of the can and the closure flange will snugly fit the sides both before and after the taggers tin end of the can has been removed.

' In the drawing accompanying and forming apart of this specification Figure l is a side elevation of a can with a removable closure showing an embodiment of my improved cutting means and the closure in its normal inoperative position on the can.

Fig. 2 is a side elevation of the closure.

'Fig.' 3 is an enlarged sectional view of a portion of the closure taken on the line 33 of Fig. 2, showing the normal position of the cutting means.

Fig. 4. is an enlarged sectional view of a portion of the can and the closure applied thereto, the section being taken substantially on the line %i of Fig. 1 and showing the position of the cutting means in the normal inoperative position of the closure.

' Fig. 5 is a view similar to Fig. 4 but showing the cutter. as piercing the taggers tin end of the can and in operative cutting po sition; and

Fig. 6 ma sectional view oi: a portion of acan after the taggerstin end has been re moved, and showing the edge of the taggers tin closure at which said closure was severed turned over or pressed smoothly to the inner surface of the can body during the cutting operation.

Similar characters of reference desi nate like parts throughout the different views of the drawing. z i

a seam or soldering, or both; After the material which is to be carried in the. can is placedtherein,'the other end or top is closed and hermetically sealed by a taggers tin closure 9, a portion of such closure as usual lapping around the side of the can, as at 10,

and soldered thereto.

My improved closure comprises a disk 11 having an annular flange 12 extending substantially at right angles to the disk portion, and the latter portion may be slightly depressed with relation to the juncture thereof with thefianee, as s own t 13, A. portion of the closure flange is stamped therefrom to provide walls "14: extending from the base of the closure flange to adjacent the disk portion .11 and a depending V-shaped nib 15 to constitute the cutter and being preferably of slightly less length than the closure flange. Between the cutter nib at the base thereof and the walls l4 there is a blank space substantially as shown at 16 for a purpose ,to be hereinafter described.

The cutter vnib 15 is bent inward-slightly from the closure flange and provided; with a shoulder 147v at the juncture of the nib with the closure flange, this shoulder not only strengthening the cutter nib but also Jinbrace .the outside .ofthe can body side of the closure opposite to the cutter nib-is pushed onto the can until the disk portion is contiguous to the taggers .t1n end ofthe vcan, which maybe readily done asithe cutter nib will slightly spring or give due to the inherent resiliency of the material thereof, and thereby eliminating .any'possi- "bility .of the cutter nib Piercing the taggers tin end. Furthermore, this inherent 'resiliency of the material of the cutter :nib serves to firmly retain the closure on the can and prevents the accidental displacemerit of the same.

To cut or sever the, taggers tin end-of the can the cover isfremovedfromthe can when the cutter nib will spring slightly inward to. its initial position shown in Fig. 3. The closure is ,then applied so that the entire circumference of the closure .or cover flange will embrace the outside of the can body, in which position the V point or apex of the cutter nib will engage the -,taggers tin end in a line just within and close to the can body, when the closure is forced onto the'canand the cutter penetrates into the taggers tin end unt l the-shoulder 1.7 at the juncture of thecutter nib and the clOSllre flang e e he op d e of the, can, bo y,

as shown in Fig. 5e. By rotating the closure 1n this position the cutter nib willrip or sure therefor having a depending flange, said flange having a downwardly pointed cutter nib cut and set inwardly therefrom to provide a shoulder whereby, when the closure 'is applied to the can with the cutter nib sprung outwardly to engage the outer face of the can, said shoulder will"- frictiona'lly engage the caniand serve as a lock for the closure. r

2. A can closure having a flange to ex tend in a direction longitudinally of the can body with portions out therefrom and through the edge of the flangeitoform a depending V-shaned cutter nib'integral With the closure flange, and said nib being bent inward; to form a shbulder the juncture of said nib with the closure flange and adapt the nib to normally extend yieldingly inward fron the flange, said nib being adapted to lie contiguous to the outer, face offthe' can body in the normal inoperative position of the closure on the can, or adapted to pierce ataggers tin end of. the can and lie nt eucusit t e nn riface Of he can dy with hes'houlder at he jlms l r Qf e ni n elosurei fi ese en ag n w h he edg .r 5 he can body and Oper te 1 res. ,.the se d e e m ethl was, h c n y as heen 5f h is S ver ubs n i l y as n f o erposesne fied 3.'. I combination wi 11' e ei e'r. n a'ied p nd n ange, said" flange having a downwardly ointed c t r n t a d set nward h r f m to provide aflshou der' wh reby; when the I I I havingia peripheral bead about its topportion, of; a

closu e is applied o the th th 'Qiitr nib "sp u g -,O1 watd y to engage th outer face "of thefcan," said shoulder. Will frictionally engage beneath the I'bead of the can andserye ass lock for the closure. I G- BEBRYI Gene of must-set may. be e a e a re s a h ar lawl ss t e see aw 61 was WfihingtqnJt Q-tf t 

